If you had Sony PSP and wanna use Google Talk directly from your PSP or other Protocol Messenger Services such as AIM, ICQ, MSN / WLM (Windows Live Messenger) or YM / Yahoo Messenger you can use “Away From the Keyboard Instant Messenger” or AFKIM. It also has built in keyboard.

Download AFKIM for Sony PSP

There are few alternative to use Windows Live Messenger on Nexus One (WLM in Android). Two Alternative below are the best ways that I recommended to your.

Use Meebo for Android
Use eBuddy for Android

Meebo and eBuddy are Multi IM Client that can connect to several Messenger Service at one such as Windows Live Messenger, FaceBook Chat, Yahoo Messenger, AIM, ICQ, and much more. That why you can use it to connect to Windows Live Messenger from your Nexus One (Android 2.1 OS)
How to install Windows Live Messenger Client in Nexus …

If you want download an Offline Installer of Yahoo Messenger 10 final version, you land on the right place. You can download at the links that I will give you below. Remember, Offline Installer or Stand Alone Installer means that after you download the installation process no need to have any internet connection. Just install and use it.
Yahoo Messenger 10 Final Version (Version 10.0.0.1102) is the “fixing” of Yahoo Messenger 10 Beta Version. Download links below:
http://download.yimg.com/ycs/msg/dl/msgr10/us/ymsgr1000_1102_us.exe
Just copy paste the url link above to your web browser and you can start …